JP2010155294A - Electrical power tool - Google Patents

Electrical power tool Download PDF

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Publication number
JP2010155294A
JP2010155294A JP2008333662A JP2008333662A JP2010155294A JP 2010155294 A JP2010155294 A JP 2010155294A JP 2008333662 A JP2008333662 A JP 2008333662A JP 2008333662 A JP2008333662 A JP 2008333662A JP 2010155294 A JP2010155294 A JP 2010155294A
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Japan
Prior art keywords
operation switch
tool
chuck
rotation
grip
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Granted
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JP2008333662A
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Japanese (ja)
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JP4961418B2 (en
Inventor
Akihiro Hozumi
昭宏 保住
Koji Omori
浩二 大盛
Hiroyuki Miyaura
宏之 宮浦
Yoshiyuki Baba
良之 馬場
Junichi Nishikimi
淳一 錦見
Satoshi Tomonaga
聡 友永
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Omron Corp
Makita Corp
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Omron Corp
Makita Corp
Omron Tateisi Electronics Co
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Application filed by Omron Corp, Makita Corp, Omron Tateisi Electronics Co filed Critical Omron Corp
Priority to JP2008333662A priority Critical patent/JP4961418B2/en
Priority to US12/643,446 priority patent/US8276685B2/en
Priority to EP09180405.4A priority patent/EP2202035B1/en
Priority to CN2009102663291A priority patent/CN101767329B/en
Publication of JP2010155294A publication Critical patent/JP2010155294A/en
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Publication of JP4961418B2 publication Critical patent/JP4961418B2/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/02—Construction of casings, bodies or handles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Power Tools In General (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electrical power tool in which a user can intuitively grasp a rotational direction and a rotational speed of a tip tool. <P>SOLUTION: The electrical power tool 1 includes: a chuck 2 provided to a tip of a tool body 3, and rotatable with a tip tool held; and an operation switch 7 having operation protrusions 6 exposed to both side surfaces of the tool body 3 so as to be able to operate, and protruded respectively and symmetrically with a rotation axis of the chuck 2 therebetween, coaxially turnable with the chuck 2, and energized so as to self-return to a neutral position. The chuck 2 is rotated in a direction according to a turning direction of the operation switch 7 at a speed according to a turning angle from the neutral position of the operation switch 7. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は電動工具に関する。   The present invention relates to a power tool.

従来の電道工具は、特許文献１に記載されているように、先端工具の回転軸と略同軸に延伸する工具本体と、工具本体から下方に延伸するグリップと、グリップの上部に配設されたトリガとを有し、トリガをグリップに向かって引き込むように操作することで、トリガの引き込み量に応じた速度で先端工具が回転するようになっている。   As described in Patent Document 1, a conventional electric power tool is provided on a tool body extending substantially coaxially with a rotation axis of a tip tool, a grip extending downward from the tool body, and an upper part of the grip. By operating the trigger so as to be pulled toward the grip, the tip tool is rotated at a speed corresponding to the pull-in amount of the trigger.

また、従来の電動工具では、回転方向を切り換えるためのスイッチが設けられており、特許文献２には、回転方向によって、トリガの引き込み量と先端工具の回転速度との関係を異ならせた発明が開示されている。   In addition, in the conventional electric tool, a switch for switching the rotation direction is provided, and Patent Document 2 discloses an invention in which the relationship between the trigger pull-in amount and the rotation speed of the tip tool is varied depending on the rotation direction. It is disclosed.

従来の電動工具において、ユーザはトリガの引き込み量を感覚的に把握するが、微細な引き込み量の違いを認識することは難しく、大まかな速度制御しかできないという問題があった。   In the conventional power tool, the user grasps the pull-in amount of the trigger sensuously, but there is a problem that it is difficult to recognize a fine difference in the pull-in amount and only rough speed control is possible.

また、トリガを有する電動工具は、工具本体とグリップとが屈曲して固定されており、作業空間が狭い場合には電動工具が入らないことがあった。
特開２００６−２１８５６０号公報 特許第３７６８４００号公報 In addition, the power tool having a trigger has the tool body and the grip bent and fixed, and the power tool may not be inserted when the work space is narrow.
JP 2006-218560 A Japanese Patent No. 3768400

前記問題点に鑑みて、本発明は、ユーザが先端工具の回転速度を、好ましくは回転方向を直感的に把握できる電動工具、より好ましくは、作業空間に合わせて形状を変えられる電動工具を提供することを課題とする。   In view of the above problems, the present invention provides a power tool that allows a user to intuitively grasp the rotational speed of the tip tool, preferably the direction of rotation, and more preferably a power tool that can be changed in shape according to the work space. The task is to do.

前記課題を解決するために、本発明による電動工具は、工具本体の先端に設けられ、先端工具を保持して回転可能なチャックと、前記工具本体の側面に操作可能に露出し、前記チャックの回転軸と平行な軸周りに回動可能に設けられた操作スイッチとを有し、前記チャックは、前記操作スイッチの回動角度に応じた速度で回転するものとする。   In order to solve the above-mentioned problems, an electric tool according to the present invention is provided at the tip of a tool body, is capable of holding and rotating the tip tool, and is operatively exposed on a side surface of the tool body. The operation switch is provided so as to be rotatable around an axis parallel to the rotation axis, and the chuck rotates at a speed corresponding to the rotation angle of the operation switch.

この構成によれば、操作スイッチが工具本体に対して回動するので、ユーザは、工具本体と操作スイッチとの相対角度から、操作スイッチの中立位置からの回動角度を直感的に把握することができる。また、先端工具は、操作スイッチと同軸に、操作スイッチの回動角度に応じた速度で回転するので、ユーザは、先端工具の回転速度を直感的に把握でき、細やかな速度制御を行うことができる。   According to this configuration, since the operation switch rotates with respect to the tool body, the user can intuitively grasp the rotation angle from the neutral position of the operation switch from the relative angle between the tool body and the operation switch. Can do. Moreover, since the tip tool rotates coaxially with the operation switch at a speed corresponding to the rotation angle of the operation switch, the user can intuitively grasp the rotation speed of the tip tool and perform fine speed control. it can.

また、本発明の電動工具において、前記チャックは、前記操作スイッチの回動方向に応じた方向に回転してもよい   In the electric tool of the present invention, the chuck may rotate in a direction corresponding to a rotation direction of the operation switch.

この構成によれば、操作スイッチの回転方向によって先端工具の回転方向を切り換えられるので、回転方向を切り換えるために余分な操作が不要であり、端子台への結線作業のような頻繁に回転方向を切り換える必要がある作業を連続して効率よく行うことができる。   According to this configuration, since the rotation direction of the tip tool can be switched by the rotation direction of the operation switch, no extra operation is required to switch the rotation direction, and the rotation direction is frequently changed as in the connection work to the terminal block. Operations that need to be switched can be performed continuously and efficiently.

また、本発明の電動工具において、前記操作スイッチは、前記チャックが回転停止する中立位置に自己復帰するように付勢されていてもよい。   In the electric tool of the present invention, the operation switch may be urged so as to self-return to a neutral position where the chuck stops rotating.

この構成によれば、操作スイッチを離すだけで電動工具を停止させることができる。また、ユーザは、操作スイッチの付勢力による反力によっても、先端工具の回転速度を把握できる。   According to this configuration, the power tool can be stopped simply by releasing the operation switch. Moreover, the user can grasp | ascertain the rotational speed of a tip tool also by the reaction force by the urging | biasing force of an operation switch.

また、本発明の電動工具において、前記操作スイッチは、前記工具本体の両側面にそれぞれ突出し、且つ、前記操作スイッチの回転軸を挟んで左右対称に、好ましくは回転軸を１８０°の角度で挟んで形成された操作突起を備えてもよい。   In the electric tool of the present invention, the operation switch protrudes from both side surfaces of the tool body and is symmetrical with respect to the rotation axis of the operation switch, preferably the rotation axis is sandwiched at an angle of 180 °. You may provide the operation protrusion formed in.

この構成によれば、電動工具を右手でも左手でも使用することができる。また、親指と他の指とを両側の操作突起上に配置し、操作スイッチを挟み込むように把持して、ダイアルを回すように操作スイッチを回動させられるので、操作スイッチの回動角度を容易に把握できる。   According to this configuration, the electric tool can be used with either the right hand or the left hand. In addition, the thumb and other fingers are placed on the operation projections on both sides, and the operation switch can be rotated by turning the dial by gripping the operation switch so that the operation switch can be pinched. Can grasp.

また、本発明の電動工具において、前記操作スイッチの回動を、前記チャックの回転が停止する中立位置において係止可能なロック機構を有してもよい。   Moreover, the electric tool of the present invention may have a lock mechanism that can lock the rotation of the operation switch at a neutral position where the rotation of the chuck stops.

この構成によれば、操作突部が床や周囲の物体に接触して操作スイッチが回動することがなく、意図しない動作による事故やバッテリの無駄な放電を防止できる。   According to this configuration, the operation projection does not contact the floor or surrounding objects and the operation switch does not rotate, and it is possible to prevent accidents due to unintended operations and wasteful discharge of the battery.

また、本発明の電動工具は、前記工具本体の後端に、ユーザが把持するグリップを有し、前記操作スイッチは、前記グリップの近傍に設けられていてもよい。   Moreover, the electric tool of this invention has a grip which a user hold | grips in the rear end of the said tool main body, The said operation switch may be provided in the vicinity of the said grip.

この構成によれば、ユーザはグリップを把持した手の指を操作スイッチに伸ばし、操作スイッチを回動させることができるので、片手でも電動工具を操作できる。   According to this configuration, the user can extend the finger of the hand holding the grip to the operation switch and rotate the operation switch, so that the power tool can be operated with one hand.

また、本発明の電動工具において、前記グリップは、前記工具本体の後端から、前記操作スイッチの回動軸に対して略平行に延伸することも、前記操作スイッチの回動軸に対して傾斜または直交して延伸することもできるように、揺動可能に取り付けられてもよい。   In the electric tool of the present invention, the grip extends from the rear end of the tool body substantially parallel to the rotation axis of the operation switch, or is inclined with respect to the rotation axis of the operation switch. Or you may attach so that rocking | fluctuation is possible so that it can also extend orthogonally.

この構成によれば、グリップを操作スイッチの回動軸に対して傾斜または直交して配置することで、ガングリップタイプの電動工具として使用でき、グリップを操作スイッチの回動軸に平行に配置することで、間口の狭い作業空間に挿入可能なペングリップタイプの電動工具としても使用できる。   According to this configuration, the grip can be used as a gun grip type electric tool by arranging the grip to be inclined or orthogonal to the rotation axis of the operation switch, and the grip is arranged in parallel to the rotation axis of the operation switch. Therefore, it can also be used as a pen grip type electric tool that can be inserted into a narrow working space.

本発明によれば、先端工具の回転軸と平行な軸周りに回動し、その回動方向および回動角度に応じて先端工具の回転方向および回転速度を決定する操作スイッチを設けたので、ユーザが操作スイッチの操作量を直感的に把握でき、先端工具の速度を細やかに制御できる。また、グリップを工具本体に対して揺動可能とすることで、電動工具の形状を変化させて多様な作業空間において使用できる。   According to the present invention, the operation switch that rotates around the axis parallel to the rotation axis of the tip tool and determines the rotation direction and rotation speed of the tip tool according to the rotation direction and the rotation angle is provided. The user can intuitively grasp the operation amount of the operation switch, and can finely control the speed of the tip tool. In addition, by making the grip swingable with respect to the tool body, the shape of the electric tool can be changed and used in various work spaces.

これより、本発明の実施形態について、図面を参照しながら説明する。図１から３は、本発明の１つの実施形態の電動工具１を示す。電動工具１は、先端にドリルやドライバビットのような先端工具を把持して回転可能なチャック２を有し、チャック２の回転軸と略同軸の概略円筒形状の工具本体３と、工具本体３の後端から下方、後斜めに延伸し、ユーザが把持するためのグリップ４とからなる。   Embodiments of the present invention will now be described with reference to the drawings. 1 to 3 show a power tool 1 according to one embodiment of the present invention. The electric power tool 1 has a chuck 2 that can rotate by gripping a tip tool such as a drill or a driver bit at the tip, a substantially cylindrical tool body 3 that is substantially coaxial with the rotation axis of the chuck 2, and the tool body 3. The grip 4 extends downward and obliquely rearward from the rear end and is gripped by the user.

工具本体３は、後端近傍の両側面に設けたスイッチ開口５からそれぞれ突出する２つの操作突部６を備える操作スイッチ７と、スイッチ７の上部に位置するように設けられたロックスイッチ８とを有する。操作突部６は、それぞれ、チャック２の回転軸と平行に延伸する突起であり、チャック２の回転軸を挟んで１８０°の角度で、左右対称に形成されている。また、工具本体３は、チャック２を回転させるモータ（不図示）を内蔵している。グリップ４は、バッテリ９を着脱可能に保持し、工具本体３に対して揺動可能に取り付けられている。   The tool body 3 includes an operation switch 7 including two operation protrusions 6 protruding from switch openings 5 provided on both side surfaces near the rear end, and a lock switch 8 provided so as to be positioned above the switch 7. Have The operation protrusions 6 are protrusions that extend parallel to the rotation axis of the chuck 2 and are formed symmetrically at an angle of 180 ° with the rotation axis of the chuck 2 interposed therebetween. The tool body 3 includes a motor (not shown) that rotates the chuck 2. The grip 4 detachably holds the battery 9 and is attached to the tool body 3 so as to be swingable.

グリップ４は、図４に示すように、工具本体３と略一直線に並び、電動工具１全体を略１本の棒状に変形させることもでき、これによって、電動工具１を間口の狭い作業空間の奥深くに挿入して、作業を行うことも可能とする。   As shown in FIG. 4, the grip 4 can be arranged in a substantially straight line with the tool body 3, and the entire power tool 1 can be deformed into a substantially single rod shape, whereby the power tool 1 can be formed in a narrow work space. It is also possible to perform work by inserting it deeply.

図５に、工具本体３から取り出した操作スイッチ７を示す。操作スイッチ７は、操作突部６が形成された概略円筒形のシリンダ１０と、シリンダ１０の内側に位置し、工具本体３に対して固定されるスイッチ本体１１とからなる。シリンダ１０は、スイッチ本体１１の周りを回動可能であり、その回動軸がチャック２およびチャック２が保持する先端工具の回転軸と同軸になるように、工具本体３に組み込まれる。さらに、シリンダ１０は、円筒壁の一端に切欠１２が形成されている。   FIG. 5 shows the operation switch 7 taken out from the tool body 3. The operation switch 7 includes a substantially cylindrical cylinder 10 in which an operation protrusion 6 is formed, and a switch body 11 that is positioned inside the cylinder 10 and is fixed to the tool body 3. The cylinder 10 can be rotated around the switch body 11 and is incorporated in the tool body 3 so that the rotation axis thereof is coaxial with the rotation axis of the chuck 2 and the tip tool held by the chuck 2. Further, the cylinder 10 has a notch 12 formed at one end of the cylindrical wall.

図６に示すように、操作スイッチ７は、シリンダ１０と一体にスイッチ本体１１の内側で回動する作用部１３を有する。スイッチ本体１１は、概略筒状に形成され、内側に突出する係止部１４を有する。さらに、操作スイッチ７は、中央部がシリンダ１０の回動軸に巻回され、両端が作用部１３および係止部１４を挟み込む付勢バネ１５を有する。   As shown in FIG. 6, the operation switch 7 has an action part 13 that rotates integrally with the cylinder 10 inside the switch body 11. The switch body 11 is formed in a substantially cylindrical shape and has a locking portion 14 that protrudes inward. Furthermore, the operation switch 7 has a biasing spring 15 whose central portion is wound around the rotation shaft of the cylinder 10 and whose both ends sandwich the action portion 13 and the locking portion 14.

図７に示すように、シリンダ１０を回動させると、作用部１３と係止部１４とが離間し、付勢バネ１５の両端をその付勢力に抗して押し拡げる。付勢バネ１５は、ユーザがシリンダ１０から手を離すと、その付勢力によって、作用部１３を係止部１４と径方向に並ぶように回動させ、操作突部６が水平になる中立位置にシリンダ１０を自己復帰させる。   As shown in FIG. 7, when the cylinder 10 is rotated, the action portion 13 and the locking portion 14 are separated from each other, and both ends of the urging spring 15 are pushed and expanded against the urging force. When the user releases his / her hand from the cylinder 10, the biasing spring 15 rotates the action portion 13 so as to be aligned in the radial direction with the locking portion 14 by the biasing force, and the neutral position where the operation protrusion 6 becomes horizontal. The cylinder 10 is self-returned.

操作スイッチ７は、グリップ４に装着したバッテリ９の電極に接続される入力端子と、工具本体３に内蔵したモータの入力端子に接続される出力端子とを備え、出力端子の極性を反転することができ、通電時間比を制御して出力電圧を変更可能な調速回路を内蔵する。調速回路は、シリンダ１０が中立位置のとき、出力端子に電圧を出力せず、チャック２を回転停止させるようになっている。   The operation switch 7 includes an input terminal connected to the electrode of the battery 9 attached to the grip 4 and an output terminal connected to the input terminal of the motor built in the tool body 3, and reverses the polarity of the output terminal. It has a built-in speed control circuit that can control the energization time ratio and change the output voltage. When the cylinder 10 is in the neutral position, the speed governing circuit does not output a voltage to the output terminal and stops the chuck 2 from rotating.

操作スイッチ７の調速回路は、図８に示すように、電動工具１において、グリップ４側からみて中立位置から右回りにシリンダ１０を回動させると、チャック２を右回りに回転させる極性で、シリンダ１０の回動角度に応じた電圧を出力する。これにより、チャック２は、操作スイッチ７のシリンダ１０の回動角度に応じた速度で回転させられる。尚、本願において、チャック２（先端工具）の回転速度に言及する場合、それは無負荷回転速度を指し、負荷時の回転速度とは必ずしも一致しない。   As shown in FIG. 8, the speed control circuit of the operation switch 7 has a polarity that rotates the chuck 2 clockwise when the cylinder 10 is rotated clockwise from the neutral position when viewed from the grip 4 side. The voltage according to the rotation angle of the cylinder 10 is output. Thereby, the chuck 2 is rotated at a speed corresponding to the rotation angle of the cylinder 10 of the operation switch 7. In addition, in this application, when mentioning the rotational speed of the chuck | zipper 2 (tip tool), it refers to a no-load rotational speed and does not necessarily correspond with the rotational speed at the time of load.

また、操作スイッチ７の調速回路は、図９に示すように、中立位置から左回りにシリンダ１０を回動させると、チャック２を左回りに、シリンダ１０の回動角度に応じた速度で回転させる電圧を出力する。   Further, as shown in FIG. 9, when the cylinder 10 is rotated counterclockwise from the neutral position, the speed control circuit of the operation switch 7 rotates the chuck 2 counterclockwise at a speed corresponding to the rotation angle of the cylinder 10. Outputs the rotating voltage.

ユーザは、電動工具１のグリップ４を把持し、親指を伸ばして、グリップ４の近傍に設けられている操作スイッチ７の操作突部６に指をかけることも、人差し指を伸ばして反対側の操作突部６に指をかけることもでき、親指と人差し指とで両側の操作突部６をつまむように挟持することもできる。つまり、ユーザは、グリップ４を把持しながら、操作スイッチ７のシリンダ１０を回動させることができる。また、これは、電動工具１を右手で把持する場合でも、左手で把持する場合でも同様であり、電動工具１は、左右どちらの手でも扱うことができる。   The user holds the grip 4 of the electric tool 1, stretches the thumb, puts a finger on the operation protrusion 6 of the operation switch 7 provided in the vicinity of the grip 4, or extends the index finger to operate the opposite side. A finger can be put on the protrusion 6, and the operation protrusions 6 on both sides can be pinched with the thumb and index finger. That is, the user can rotate the cylinder 10 of the operation switch 7 while holding the grip 4. This is the same whether the power tool 1 is gripped with the right hand or the left hand, and the power tool 1 can be handled with either the left or right hand.

ユーザは、把持しているグリップ４の向きを基準に、操作スイッチ７の回動角度を直感的に把握することができる。つまり、ユーザは、チャック２の回転速度を容易に把握でき、その回転速度を細やかに制御することができる。尚、本実施形態の電動工具１では、操作スイッチ７の回動軸と、チャック２の回転軸とが同軸であるが、操作スイッチ７の回動軸がチャック２の回転軸と同軸でなくでも、チャック２の回転軸と略平行であれば、操作性については殆ど問題がない。   The user can intuitively grasp the rotation angle of the operation switch 7 based on the direction of the grip 4 being gripped. That is, the user can easily grasp the rotation speed of the chuck 2 and can finely control the rotation speed. In the electric power tool 1 of the present embodiment, the rotation axis of the operation switch 7 and the rotation axis of the chuck 2 are coaxial, but the rotation axis of the operation switch 7 may not be coaxial with the rotation axis of the chuck 2. If the rotation axis of the chuck 2 is substantially parallel, there is almost no problem in operability.

また、チャック２の回転方向は、操作スイッチ７の回動方向に一致するので、回転方向の切換のためのスイッチ操作が不要であり、作業を連続して行うことができる。また、先端工具を回転させたい方向に操作スイッチ７を回動させるため、誤って逆方向に先端工具を回転させてしまう失敗がない。   Further, since the rotation direction of the chuck 2 coincides with the rotation direction of the operation switch 7, no switch operation for switching the rotation direction is required, and the operation can be performed continuously. Further, since the operation switch 7 is rotated in the direction in which the tip tool is desired to be rotated, there is no failure that the tip tool is erroneously rotated in the reverse direction.

図１０に示すように、ロックスイッチ８は、チャック２および操作スイッチ７の回動軸と平行にスライド可能に設けられており、操作スイッチ７のシリンダ１０に形成した切欠１２に係合可能である。つまり、ロックスイッチ８は、図示するように、操作スイッチ７が中立位置にあるとき、グリップ４側にスライドすることで、切欠１２に係合してシリンダ１０の回動を係止するロック機構を構成する。   As shown in FIG. 10, the lock switch 8 is slidably provided in parallel with the rotation shafts of the chuck 2 and the operation switch 7, and can be engaged with a notch 12 formed in the cylinder 10 of the operation switch 7. . That is, as shown in the figure, the lock switch 8 has a lock mechanism that engages with the notch 12 and stops the rotation of the cylinder 10 by sliding to the grip 4 side when the operation switch 7 is in the neutral position. Constitute.

ロックスイッチ８によって、操作スイッチ７の回動を係止することで、チャック２を停止状態に保つことができ、電動工具１が床や周囲の物体に接触し、操作スイッチ７が偶然に操作されて、意図せず先端工具が回転することによる怪我や器物の損傷、並びに、無駄な電力の消費を防止できる。   By locking the rotation of the operation switch 7 with the lock switch 8, the chuck 2 can be kept in a stopped state, the electric tool 1 comes into contact with the floor or surrounding objects, and the operation switch 7 is accidentally operated. Injury and damage to the tool due to unintentional rotation of the tool and unnecessary power consumption can be prevented.

図１１に、電動工具１における、操作スイッチ７の回動角度と、チャック２の回転速度との関係を示す。図示するように、操作スイッチ７が中立位置にあるときは、調速回路の入力端子と出力端子との間の電路を開いて、電圧を出力しないようにする。操作スイッチ７が数度回動したとき、調速回路の入力端子と出力端子とを所定の時間比で開閉するスイッチング素子を介して接続する。さらに、操作スイッチ７を回動させると、可変抵抗の抵抗値が変化し、スイッチング素子の閉路時間が操作スイッチ７の回動角度に比例して長くなる。そして、最終的に、操作スイッチ７が約３０°回動されると、スイッチング素子を連続してオンし、チャック２を最大速度で回転させる。これによって、ユーザは、先端工具の回転数を略リニアに操作することができる。   FIG. 11 shows the relationship between the rotation angle of the operation switch 7 and the rotation speed of the chuck 2 in the electric power tool 1. As shown in the figure, when the operation switch 7 is in the neutral position, the electric circuit between the input terminal and the output terminal of the speed control circuit is opened so that no voltage is output. When the operation switch 7 is rotated several degrees, the input terminal and the output terminal of the speed control circuit are connected via a switching element that opens and closes at a predetermined time ratio. Further, when the operation switch 7 is rotated, the resistance value of the variable resistor changes, and the closing time of the switching element becomes longer in proportion to the rotation angle of the operation switch 7. Finally, when the operation switch 7 is rotated about 30 °, the switching element is continuously turned on to rotate the chuck 2 at the maximum speed. As a result, the user can operate the rotational speed of the tip tool substantially linearly.

また、先端工具の回転数を、低速域でより繊細に調整したいような場合は、図１２に示すように、操作スイッチ７の回動角度と、チャック２の回転速度との関係が、加速度的に変化するようにしてもよい。   Further, when it is desired to finely adjust the rotation speed of the tip tool in a low speed region, the relationship between the rotation angle of the operation switch 7 and the rotation speed of the chuck 2 is accelerated as shown in FIG. You may make it change to.

尚、上記実施形態では、操作スイッチ７の回動方向と同じ方向にチャック２（および保持する先端工具）を回転させたが、例えば、電動工具１を、親指のみを操作突部に伸ばして操作する場合、右利きのユーザにとっては、操作スイッチ７の回動方向とチャック２の回転方向とが逆方向である方が感覚的に使用しやすい場合がある。つまり、本発明では、操作スイッチ７の回動方向とチャック２の回転方向とを逆方向にしてもよく、操作スイッチ７の回動方向とチャック２の回転方向との関係を正逆切り換えられるようにしてもよい。   In the above embodiment, the chuck 2 (and the tip tool to be held) is rotated in the same direction as the rotation direction of the operation switch 7. For example, the electric tool 1 is operated by extending only the thumb to the operation projection. In this case, it may be easier for a right-handed user to use it sensuously when the direction of rotation of the operation switch 7 and the direction of rotation of the chuck 2 are opposite. That is, in the present invention, the rotation direction of the operation switch 7 and the rotation direction of the chuck 2 may be reversed, and the relationship between the rotation direction of the operation switch 7 and the rotation direction of the chuck 2 can be switched between forward and reverse. It may be.

また、グラインダビットやドリルのような先端工具は、回転方向を逆転する必要に乏しいので、操作スイッチ７を中立位置からいずれの方向に回動してもチャック２が正転するようにしてもよい。   Further, since a tip tool such as a grind davit or a drill is not required to reverse the rotation direction, the chuck 2 may be rotated in the normal direction even if the operation switch 7 is rotated in any direction from the neutral position. .

本発明は、ドリルやドライバビット、グラインダ等の先端工具の回転方向および回転速度を制御する電動工具に利用できる。   INDUSTRIAL APPLICABILITY The present invention can be used for an electric tool that controls the rotation direction and rotation speed of a tip tool such as a drill, a driver bit, and a grinder.

本発明の１つの実施形態の電動工具の斜視図。The perspective view of the electric tool of one embodiment of the present invention. 図１の電動工具の左側面図。The left view of the electric tool of FIG. 図１の電動工具の右側面図。The right view of the electric tool of FIG. 図１の電動工具のグリップを揺動させた状態の左側面図。The left view of the state which rock | fluctuated the grip of the electric tool of FIG. 図１の電動工具の操作スイッチの斜視図。The perspective view of the operation switch of the electric tool of FIG. 図５の操作スイッチの断面図Sectional view of the operation switch of FIG. 図５の操作スイッチの回転時の断面図Sectional view at the time of rotation of the operation switch of FIG. 図５の操作スイッチの右回転時の斜視図。The perspective view at the time of right rotation of the operation switch of FIG. 図５の操作スイッチの左回転時の斜視図。The perspective view at the time of left rotation of the operation switch of FIG. 図１の電動工具の操作スイッチ部分の軸方向断面図。FIG. 2 is an axial sectional view of an operation switch portion of the electric tool of FIG. 1. 図１の電動工具の操作スイッチ角度と回転速度との関係を示すグラフ。The graph which shows the relationship between the operation switch angle and rotation speed of the electric tool of FIG. 図１１の操作スイッチ角度と回転速度との関係の代案を示すグラフ。The graph which shows the alternative of the relationship between the operation switch angle of FIG. 11, and rotational speed.

符号の説明Explanation of symbols

１…電動工具
２…チャック
３…工具本体
４…グリップ
５…スイッチ開口
６…操作突部
７…操作スイッチ
８…ロックスイッチ
９…バッテリ
１０…シリンダ
１１…スイッチ本体
１２…切欠
１３…作用部
１４…係止部
１５…付勢バネ DESCRIPTION OF SYMBOLS 1 ... Electric tool 2 ... Chuck 3 ... Tool main body 4 ... Grip 5 ... Switch opening 6 ... Operation protrusion 7 ... Operation switch 8 ... Lock switch 9 ... Battery 10 ... Cylinder 11 ... Switch main body 12 ... Notch 13 ... Action part 14 ... Locking part 15 ... Biasing spring

Claims (7)

工具本体の先端に設けられ、先端工具を保持して回転可能なチャックと、
前記工具本体の側面に操作可能に露出し、前記チャックの回転軸と平行な軸周りに回動可能に設けられた操作スイッチとを有し、
前記チャックは、前記操作スイッチの回動角度に応じた速度で回転することを特徴とする電動工具。 A chuck provided at the tip of the tool body and capable of holding and rotating the tip tool;
An operation switch that is exposed to be operable on the side surface of the tool body and is rotatable about an axis parallel to the rotation axis of the chuck;
The electric tool according to claim 1, wherein the chuck rotates at a speed corresponding to a rotation angle of the operation switch. 前記チャックは、前記操作スイッチの回動方向に応じた方向に回転することを特徴とする請求項１に記載の電動工具。   The electric tool according to claim 1, wherein the chuck rotates in a direction corresponding to a rotation direction of the operation switch. 前記操作スイッチは、前記チャックの回転が停止する中立位置に自己復帰するように付勢されていることを特徴とする請求項１または２に記載の電動工具。   The power tool according to claim 1, wherein the operation switch is biased so as to self-return to a neutral position where rotation of the chuck stops. 前記操作スイッチは、前記工具本体の両側面にそれぞれ突出し、且つ、前記操作スイッチの回転軸を挟んで左右対称に形成された操作突起を、備えることを特徴とする請求項１から３のいずれかに記載の電動工具。   The said operation switch is provided with the operation protrusion which each protruded in the both sides | surfaces of the said tool main body, and was formed left-right symmetrically on both sides of the rotating shaft of the said operation switch. The electric tool as described in. 前記操作スイッチの回動を、前記チャックの回転が停止する中立位置において係止可能なロック機構を有することを特徴とする請求項１から４のいずれかに記載の電動工具。   5. The power tool according to claim 1, further comprising: a lock mechanism that can lock the rotation of the operation switch at a neutral position where rotation of the chuck stops. 6. 前記工具本体の後端に、ユーザが把持するグリップを有し、
前記操作スイッチは、前記グリップの近傍に設けられていることを特徴とする請求項１から５のいずれかに記載の電動工具。 At the rear end of the tool body, there is a grip that the user grips,
The power tool according to claim 1, wherein the operation switch is provided in the vicinity of the grip. 前記グリップは、前記工具本体の後端から、前記操作スイッチの回動軸に対して略平行に延伸することも、前記操作スイッチの回動軸に対して傾斜または直交して延伸することもできるように、揺動可能に取り付けられていることを特徴とする請求項６に記載の電動工具。   The grip can extend from the rear end of the tool main body substantially parallel to the rotation axis of the operation switch, or can extend at an inclination or perpendicular to the rotation axis of the operation switch. The electric tool according to claim 6, wherein the electric tool is attached so as to be swingable.
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JP2020523208A (en) * 2017-06-12 2020-08-06 アトラス・コプコ・インダストリアル・テクニーク・アクチボラグ Power wrench with angle drive
JP2020523207A (en) * 2017-06-12 2020-08-06 アトラス・コプコ・インダストリアル・テクニーク・アクチボラグ Power wrench with adjustable trigger position
JP7222926B2 (en) 2017-06-12 2023-02-15 アトラス・コプコ・インダストリアル・テクニーク・アクチボラグ Power wrench with adjustable trigger position
KR102528696B1 (en) 2017-06-12 2023-05-08 아틀라스 콥코 인더스트리얼 테크니크 에이비 Power wrench with adjustable trigger position
JP7389652B2 (en) 2017-06-12 2023-11-30 アトラス・コプコ・インダストリアル・テクニーク・アクチボラグ Power wrench with angle drive

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EP2202035A8 (en) 2010-11-17
EP2202035B1 (en) 2013-07-24
EP2202035A2 (en) 2010-06-30
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US8276685B2 (en) 2012-10-02
US20100163265A1 (en) 2010-07-01

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